Characterization of the Anti-Quorum Sensing Activity Exhibited by Marine Macro algae of South Florida

Quorum sensing is a communication mechanism employed by many bacteria. The bacteria secrete signal molecules known as acyl homoseriene lactones (AHLs) that cue to population size/density. Bacteria can be alerted of this optimum population by the concentration of these signal molecules. When the concentration of AHLs exceed a threshold valve, they enter the bacterial cell and causes the transcription of genes encoding virulence factors necessary for their colonization and survival. The marine algae Delise a pulchra, found off the coast of Australia is thought to produce compounds that inhibit the activity of the AHLs. The algae employ these compounds, known as furanones, as an anti-fouling agent. We postulated that marine algae of South Florida might contain similar activity; we screened 30 different algal species and found 22 species had the activity. Algal extracts were made from Halimeda incrassata using hexane, chloroform, ethyl acetate and methanol as solvents. The extracts were assayed for anti-quorum sensing activity. The results showed many of the South Florida green algae to possess anti-quorum sensing activity, however extracts of H incrassata did not show quorum sensing inhibition.

Stable Isotope Biogeochemistry of South Florida Coastal Marine Ecosystems

Southeast Florida’s continual urban expansion will potentially increase anthropogenic pollution in adjacent coastal marine systems. Furthermore, increased nutrient loads could have detrimental effects on the already threatened Florida Reef Tract. The present study uses a stable isotopic approach to determine the sources and the impact of nutrients on the Florida Reef Tract. δ13C and δ15N analysis of macroalgae, sponges, and sediment were analyzed in order to determine nutrient inputs in this region. While δ13C data did not display any significant trends spatially, δ15N values of the majority of biota exhibited a strong East to West gradient with more enriched values close to shore. Relative enrichment in δ15N values were measured for sediments sampled along the Florida Reef Tract in comparison to a pristine Marquesas Keys sediment core. The δ15N data also implies that shoreline anthropogenic nutrients have more nutrient loading implications on reefs than major point sources.

Report of the University of South Carolina

The bulletin presents a report of the work of the University of South Carolina for the session of 1930-1931 and also a financial statement by the Treasurer of receipts and expenditures from January 1, 1931, to December 31, 1931.

University of South Carolina Aiken Annual Accountability Report Fiscal Year 1994-1995

The University of South Carolina Aiken reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

University of South Carolina Aiken Annual Accountability Report Fiscal Year 1995-1996

The University of South Carolina Aiken reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

University of South Carolina Aiken Annual Accountability Report Fiscal Year 1997-1998

The University of South Carolina Aiken reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

University of South Carolina Beaufort Annual Report Fiscal Year 1994-1995

The University of South Carolina Beaufort reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

University of South Carolina Beaufort Annual Report Fiscal Year 1995-1996

The University of South Carolina Beaufort reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

University of South Carolina Beaufort Annual Accountability Report Fiscal Year 1997-1998

The University of South Carolina Beaufort reports to the Office of State Budget its annual accountability report that includes an executive summary, a description of the leadership system, customer focus and satisfaction and other performance criteria, mission, and program descriptions and budgets.

UNIVERSITY OF SOUTH CAROLINA BEAUFORT ANNUAL REPORT 2006-2007 Progress Through Partnerships

The annual report highlights events, projects, and financing.

MEDICAL UNIVERSITY OF SOUTH CAROLINA Annual Report 1978-1979

Each year the Medical University of South Carolina produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, agency discussion and analysis, and strategic planning documents.

MEDICAL UNIVERSITY OF SOUTH CAROLINA Annual Report 1977-1978

Each year the Medical University of South Carolina produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, agency discussion and analysis, and strategic planning documents.

MEDICAL UNIVERSITY OF SOUTH CAROLINA Annual Report 1980-1981

Each year the Medical University of South Carolina produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, agency discussion and analysis, and strategic planning documents.

MEDICAL UNIVERSITY OF SOUTH CAROLINA Annual Report 1979-1980

Each year the Medical University of South Carolina produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, agency discussion and analysis, and strategic planning documents.

MEDICAL UNIVERSITY OF SOUTH CAROLINA Annual Report 1974-1975

Each year the Medical University of South Carolina produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, agency discussion and analysis, and strategic planning documents.